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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >PolSAR Coherency Matrix Optimization Through Selective Unitary Rotations for Model-Based Decomposition Scheme
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PolSAR Coherency Matrix Optimization Through Selective Unitary Rotations for Model-Based Decomposition Scheme

机译:基于模型分解方案的选择性Select旋转的PolSAR相干矩阵优化

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In this letter, a special unitary SU(3) matrix group is exploited for coherency matrix transformations to decouple the energy between orthogonal states of polarization. This decoupling results in the minimization of the cross-polarization power along with the removal of some off-diagonal terms of coherency matrix. The proposed unitary transformations are utilized on the basis of the underlying dominant scattering mechanism. By doing so, the reduced power from the cross-polarization channel is always concentrated on the underlying dominant copolar scattering component. This makes it unique in comparison to state-of-the-art techniques. The proposed methodology can be adopted to optimize the coherency matrix to be used for the model-based decomposition methods. To verify this, pioneer three-component decomposition model is implemented using the proposed optimized coherency matrix of two different test sites. The comparative studies are analyzed to show the improvements over state-of-the-art techniques.
机译:在这封信中,一个特殊的unit元SU(3)矩阵组被用于相干矩阵变换,以使极化的正交状态之间的能量解耦。这种去耦导致交叉极化功率的最小化以及相干矩阵的一些非对角项的去除。在基本的主要散射机制的基础上,利用了所提出的unit变换。通过这样做,来自交叉极化通道的降低的功率总是集中在下面的主要同相散射分量上。与最新技术相比,它具有独特性。可以采用所提出的方法来优化用于基于模型的分解方法的相干矩阵。为了验证这一点,使用建议的两个不同测试站点的优化相干矩阵,实现了先锋三组分分解模型。分析了比较研究,以显示对最新技术的改进。

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